Finnish your cam break in at 2000 rpm drain that break in oil to get out the contaminants change the filter add some zddp and 10 30 oil restart and see what your oil pressure is If your engine has very close tollerances it might be a little high if you ordered a high volume high pressure pump but forgot to open the pump passage or chamfer the crank oil holes! If its an early block and your getting pressure in the rear move your sending unit to the front of your block and see what the reading is.